Games like Nebula Invasion
Games like Nebula Invasion include Planes, Bullets and Vodka, Nova Drift, LUFTRAUSERS, Bit Blaster XL, and Star Saviors. We matched them by the tags players give Nebula Invasion on Steam (Action, Shoot 'Em Up, Arcade, Retro, and 2D): closest matches first, and among equally close ones the better-known games.

Planes, Bullets and Vodka
Shared: Action · Shoot 'Em Up · Retro

Nova Drift
Shared: Shoot 'Em Up · Arcade · Bullet Hell

LUFTRAUSERS
Shared: Action · Arcade · Shoot 'Em Up

Bit Blaster XL
Shared: Shoot 'Em Up · Arcade · Action

Star Saviors
Shared: Shoot 'Em Up · Action · Arcade

ZeroRanger
Shared: Shoot 'Em Up · Action · Arcade

Ikaruga
Shared: Shoot 'Em Up · Arcade · Action

BALL x PIT
Shared: Action · Arcade · Shoot 'Em Up

Cyberhunt
Shared: Action · Shoot 'Em Up · Arcade

Revolution Ace
Shared: Action · Shoot 'Em Up · Arcade

Beat Hazard
Shared: Shoot 'Em Up · 2D · Bullet Hell

METAL SLUG
Shared: Action · Arcade · 2D

Huntdown
Shared: Action · Shoot 'Em Up · Shooter

ARCADE GAME SERIES: GALAGA
Shared: Action · Arcade · Shoot 'Em Up

DRAINUS
Shared: Action · Shoot 'Em Up · Shooter

Vampire Survivors
Shared: Bullet Hell · 2D · Action

METAL SLUG 3
Shared: Action · Arcade · Retro

METAL SLUG X
Shared: Action · Arcade · Shoot 'Em Up

Jets'n'Guns Gold
Shared: Shoot 'Em Up · Action · 2D

Distant Space
Shared: Shoot 'Em Up · Arcade · Action

Exit the Gungeon
Shared: Action · Arcade · Indie

UFO 50
Shared: Action · Retro · Arcade

DoDonPachi Resurrection
Shared: Shoot 'Em Up · Arcade · Action

Super Galaxy Squadron EX Turbo
Shared: Shoot 'Em Up · Action · Retro